| 路堤荷载下碎石桩复合地基沉降计算研究 |
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| 引用本文： | 袁江雅. 路堤荷载下碎石桩复合地基沉降计算研究[J]. 中南公路工程, 2010, 0(2): 1-4,69 |
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| 作者姓名： | 袁江雅 |
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| 作者单位： | 湖南省高速公路管理局; |
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| 基金项目： | 国家863计划资助项目(2006AA11Z104) |
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| 摘 要： | 在对碎石桩复合地基加固机理、破坏模式及复合地基与路堤共同作用机理分析的基础上,对路堤荷载作用下碎石桩复合地基沉降计算进行研究,提出碎石桩复合地基沉降的三段计算模式,即碎石桩鼓胀段采用应力修正法、非鼓胀段采用复合模量法、下卧层采用分层总和法的计算模式,并给出了相应的计算公式。文末以某工程实例对本文计算方法进行了验证。结果表明,碎石桩复合地基沉降三段计算方法可有效考虑路堤与碎石桩复合地基相互作用特点,方便工程应用。
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| 关 键 词： | 复合地基 碎石桩 作用机理 沉降计算 桩土应力比 |
Research on Settlement Calculation of Gravel Pile Composite Foundation Under Embankment Load |
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| YUAN Jiangya. Research on Settlement Calculation of Gravel Pile Composite Foundation Under Embankment Load[J]. Central South Highway Engineering, 2010, 0(2): 1-4,69 |
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| Authors: | YUAN Jiangya |
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| Affiliation: | YUAN Jiangya (Hunan expressway administration bureau,Changsha,Hunan 410001,China) |
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| Abstract: | Based on working mechanism and failure models and embankment-composite foundation interaction analysis of gravel pile composite foundation,the settlement calculation of gravel pile composite foundation under embankment load is analyzed.Three parts calculation model for settlement calculation of gravel pile composite foundation is proposed,namely modified stress method for the expansion part of gravel pile and composite modulus method for that non-expansion part and layer-wise summation method for substratum... |
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| Keywords: | Composite foundation gravel pile working mechanism settlement calculation pile-soil stress ratio |
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